Top Tech Jobs & Startup Jobs in Chicago, IL

Lead corporate accounting and consolidation for PEAK6 and subsidiaries. Manage a small accounting team, oversee month-end close, maintain GL and controls, support audits, drive process improvements and automation, and evaluate accounting software tools.

As a Mobile Developer, you'll design and build scalable mobile apps using React Native for iOS and Android, collaborating closely with teams and maintaining app quality.

Join the evening core engineering team to develop and maintain finance and trading systems (PnL, positions, reconciliations). Collaborate cross-functionally, support production environments, monitor performance, troubleshoot incidents, and hand off to Budapest for follow-the-sun operations while contributing across the full product lifecycle.

Design and develop high-performance trading systems, optimize execution algorithms, mentor junior engineers, and troubleshoot production issues in a fast-paced market environment.

As an Execution Quantitative Researcher at PEAK6, you will analyze algorithm performance and collaborate with engineers to optimize electronic execution algorithms for trading.

Identify, analyze, and resolve security vulnerabilities while enhancing security infrastructure, threat detection, and compliance processes across PEAK6's systems.

Join a core engineering team to design, build, and support proprietary trading systems on an evening shift. Responsibilities include full-stack development, system stewardship, collaborating with global teams (Budapest), testing (manual and automated), performance optimization, and rapid production troubleshooting to ensure 24-hour trading continuity.

The Product Manager will develop product roadmaps, engage with teams to identify solutions, define user stories, and use data to improve product performance.

The Head of Operations will lead OTC trade lifecycle management, oversee counterparty relationships, design scalable systems and manage an operations team.

Build and maintain Finance and Operations systems (PnL reporting, positions, reconciliations). Collaborate with ops, finance, and engineering to design, deploy, monitor, and troubleshoot production tools and automation ensuring accuracy and performance.